/*
* Copyright (c) 2007-2014 Concurrent, Inc. All Rights Reserved.
*
* Project and contact information: http://www.cascading.org/
*
* This file is part of the Cascading project.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package cascading.lingual.optiq.enumerable;
import cascading.lingual.platform.PlannerPlatformBroker;
import cascading.lingual.platform.PlatformBroker;
import net.hydromatic.linq4j.Enumerator;
/**
*
*/
public class CascadingPlannerEnumerable extends CascadingFlowRunnerEnumerable
{
public CascadingPlannerEnumerable( long index )
{
super( index );
// this has to happen in the constructor and not in enumerator(), since optiq is not calling
// enumerator() for simple queries.
PlatformBroker platformBroker = getPlatformBroker();
if( platformBroker instanceof PlannerPlatformBroker )
( (PlannerPlatformBroker) platformBroker ).setTail( getBranch().current );
}
@Override
public Enumerator enumerator()
{
return new Enumerator()
{
@Override
public Object current()
{
return new Object[]{};
}
@Override
public boolean moveNext()
{
return false;
}
@Override
public void reset()
{
}
@Override
public void close()
{
}
};
}
}